9001 - Dns Resolve Error

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Ddns Dns Resolve Error

Pulse Graphs New issue DNS resolution with custom resolver fails intermittently #504 dns resolve error yamaha Closed thefosk opened this Issue May 2, 2015 · 7 comments Projects None yet Labels None yet

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Milestone No milestone Assignees No one assigned 3 participants thefosk commented May 2, 2015 I am experiencing a weird issue related to DNS resolution when starting a TCP request with dns_error_rcode_notauth Lua, which sometimes seems to work and some other times doesn't. Specifically it seems like nginx is unable to always resolve localhost to 127.0.0.1 with a third part DNS resolver, but only intermittently. How to replicate I have isolated the problem in the following code. openresty/1.7.10.1 on OS X 10.10.3 I am using dnsmasq v2.72 as a local DNS invalid content for an mx record (code: 9009) server, and I am running it with no configuration at /etc/dnsmasq.conf (delete that file if it exists): $ dnsmasq -port 8053 I am using the following nginx.conf file: worker_processes auto; error_log logs/error.log info; daemon off; events { worker_connections 1024; } http { resolver 127.0.0.1:8053; server { listen 9000; location / { access_by_lua ' local sock = ngx.socket.tcp() local ok, err = sock:connect("localhost", 9001) if not ok then ngx.log(ngx.ERR, "failed to connect to localhost: ", err) ngx.say("error") ngx.exit(500) end sock:close() ngx.say("success") ngx.exit(200) '; } } server { listen 9001; location / { return 200 'Hello World'; } } } This configuration starts two servers: A simple test server on port 9001 that returns Hello World. Another server on port 9000 that tries to connect to localhost:9001, and if the connection succeeds returns a 200 status code, otherwise returns a 500 status code. /etc/hosts has the following entry: 127.0.0.1 localhost Executing the test Basically when making a request to http://127.0.0.1:9000/, the Lua code tries to resolve localhost and connect to the hello world server listening at 900

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credit card required 10 different ways to troubleshoot DNS resolutions issues. Introduction We all need proper DNS resolution for our network applications. When it this is not working, what do you do? Let us find out… https://github.com/openresty/lua-nginx-module/issues/504 Let’s face it, when DNS resolution is not working, using anything on your computer that has to do with networking is painful because there is good chance it will not work. DNS really is not a “nice feature” of a network, it is a requirement. As a network admin, I have heard the alarming cry of end users moaning that the network is down, when it would be the cause of the http://www.windowsnetworking.com/articles-tutorials/trouble/10-Ways-Troubleshoot-DNS-Resolution-Issues.html DNS servers. In these cases I assure them that the network is up and running fine but it is the DNS servers that are down! As you can imagine, that does not go over very well with them because to an end user, it is all the same thing. DNS is “the network” (not that they know what DNS is anyway). So how do you troubleshoot this critical network infrastructure service when you are on an end user PC (or your PC) and DNS is not resolving a DNS name? Here are the 10 tips and tricks that I recommend you try to get DNS working again… 1. Check for network connectivity Many times, if you open your web browser, go to a URL, and that URL fails to bring up a website, you might erroneously blame DNS. In reality, the issue is much more likely to be caused by your network connectivity. This is especially true if you are using wireless networking on a laptop. With wireless security protocols, the key will be periodically renegotiated or the signal strength will fade, causing a loss of network connectivity. Of course, you can lose network connectivity on any type of network. In other words, before blaming DNS for your problems, start troubleshooting by ch

EditionsStandard EditionProfessional EditionEnterprise EditionEnterprise PremiumFeature MatrixWebmail DemoVideo GalleryMigrate To MailEnableTestimonialsPurchasePricingUpgradesPurchaseLicensingDownloadsProductsTools & UtilitiesDiagnostic ResourcesMigration & ConversionManagement UtilitiesContent/Spam FilteringApplication ExtensionsBeta ReleasesSupportSupport OverviewKnowledge BaseDocumentationDiscussion ForumRaise Support TicketSystem RequirementsOnline Diagnostic UtilitiesDevelopersGeneralResourcesPartnersResellersServicesHostingControl PanelIntegrationBecome a https://www.mailenable.com/kb/content/article.asp?ID=ME020043 ResellerCompanyAnnouncementsContact UsTechnical SupportRaise SuggestionMedia Downloads ME020043 - INF:Which DNS should be used with MailEnable? SUMMARY DNS servers that should be used with http://www.symantec.com/connect/articles/windows-system-error-codes-exit-codes-description MailEnable. Also outlines the various DNS error codesthat can be encountered ifit is incorrectly setup. DETAIL The DNS that MailEnable uses to dns resolve resolve domains for outbound emailare defined in the MailEnable Administration Program under the properties of the SMTP Connector. When MailEnable is first installedit will query network interfaces to determine which DNS servers to use, however, these should be validated - particularly ifthere have been dns resolve error problemssending outbound mail to non-local domains. The current DNS settings the server is using can be determinedby using the ipconfig command at the Windows command (cmd) prompt. At the command prompt, simply enter IPCONFIG /ALL | MORE. The DNS IP addresses will be reported under each ofthe bound network interfaces. TheseIP addressesshould (in most cases) be the same as those defined under the SMTP Connector. Ensure thatthe DNS being usedis capable of resolving remote hosts independent of MailEnable. i.e. nslookup should be able to host names using the DNS that has been selected. IfDNS settings are not configured correctly,the MailEnable SMTP Debug log filewill contain error codes when an email is being sent to a remote domain. If the SMTP Debug log contains these error codes when sending emails to

Français Deutsch 日本語 Español Help Video Screencast Help As we strive to continually improve your experience on our site, please help us by taking this survey and tell us about your satisfaction level using Symantec Connect. One lucky winner will receive 500 Connect points! * Take the survey. Windows System Error Codes (exit codes) Description Created: 28 Jan 2009 • Updated: 20 Dec 2010 | 9 comments Language TranslationsMachine TranslationsDeutsch Français Español 简体中文 日本語 Sidd +19 19 Votes Login to vote Tweet Application installation (legacy setup applications or Windows installer applications) sometimes fails without any error message. These tasks will return exit/error codes when log file is generated. The following script will help in getting the Exit/Error code of Application installation else on can get it from log file. Dim oShell, MyApp, i Set oShell = CreateObject("WScript.Shell") MyApp = """C:\MyApplication\Setup.exe"" /Q" i = 0 i = oShell.Run(MyApp, 1 ,True) WScript.Echo "Exit Code is: " & (i) Set oShell = Nothing Note: Use Silent switches according to the application. The table below describes system Exit/Error codes when a task is executed. The description of codes may help in identifying and troublshooting the issues. Code Description 0 The operation completed successfully. 1 Incorrect function. 2 The system cannot find the file specified. 3 The system cannot find the path specified. 4 The system cannot open the file. 5 Access is denied. 6 The handle is invalid. 7 The storage control blocks were destroyed. 8 Not enough storage is available to process this command. 9 The storage control block address is invalid. 10 The environment is incorrect. 11 An attempt was made to load a program with an incorrect format. 12 The access code is invalid. 13 The data is invalid. 14 Not enough storage is available to complete this operation. 15 The system cannot find the drive specified. 16 The directory cannot be removed. 17 The system cannot move the file to a different disk drive. 18 There are no more files. 19 The media is write protected. 20 The system cannot find the device specified. 21 The device is not ready. 22 The device does not recognize the command. 23 Data error (cyclic redundancy check). 24 The program issued a command but the comman